Paper-carriage-shifting mechanism for computing-machines.



J. E. W. GREVE. PAPER CARRIAGE SHIFTING MECHANISM FOR COMPUTING-MACHINES.

APPLICATION FILED APR-10. 1915.

1,144,192. Patentcd June 22, 1915,

' Mam STATES PATENT @FFICE. JOHN EMIL WILLIAM GREVE, F CHEMNITZ, GERMANY, ASSIGNQR T0 WANDERER- "WEBKE, VOIBAMALS WINKLHQFER & JAENICIG A. G., OF SCHONAU, NEAR CHEM- iin'z, GERMANY.

' rarnnpcannmcn-snirrme MECHANISM Foe. comrutrrnemaonmns.

Specification of Letters Patent.

Patented June 22, 1915.

Application med Aprii 1o, 1915.,53e1ial1f0. 20,574,

To all whom it may concern.-

Be it known that LJOHN Emir. WILLIAM GREVE, av subject of the Emperor of Germany, residing at Chemnitz, Saxony, Germany, have invented certain new and useful mprovelnents. in Paper-Carriage-Shzfting echanisms for Computing Machines, of

" which the followmg is a specification.

' already is provided that a shift can he present invention relates to paper carriage shifting mechanisms for computcolumn to the of the paperone column to the other can be either automatically carried out with the movement of the hand-lever, or the driving mechanism of the computing machine, or can be carried out by hand after the motion transmitting connection between the machine drive and the shift 1601: has been rendered inoperative. Similar mechanisms are known, and the paper carriage shifting mechanism of this invention differs from prior mechanisms in that the controllmgmeans of the shift-lock is actuated by aspecial shift-key when the driving transmission between the machine-drive and the shift-lock is cut out, said key being suitably located on the keyboard. 'By this means it be made from one column to another without difiiculty [when numbers do not appear in'one or more other columns, without it being necessary to make one or more extra strokes of the hand crank. 1

One form of the subject-matter of the present invention is shown in the drawings, in which,

Figure 1 is a a sectional view taken through the paper carriage shifting mechanism, the view being taken from the left side of the machine, and Fig. 2 is a detail showing the shift key.

eferring more particularly to said drawings, the paper-roll 1 is suitably journaled in the side plates 3 of the paper-carriage 2, the paper-carriage 2 being carried by the guide- '6 upon the machine casing or housing 5 t rough the intef-mediacy of the balls 4.

e sidewise movement of the paper carriage is secured in well known manner through a carriage actuating spring which is, for example, suitably mounted at the left on the paper carriage.

swinging movement by end of the guide-rails 6 in a spring-housing thehousing 7 being formed intoa drum to which one end of the cord 8 is secured, the oppositeend of the cord being secured to an eye'provided in a projection 9 formed I At the lower end of the paper carriage 2 is secured a toothed rail 10, which. carries setting devices or shifting elements 12 fitted with stop-lugs 11, below which is pivotally mounted the shift lock 14 upon supporting arms 13. The shift lock 14 provided in suitable manner with a freely pivoted springpositioned shifbtooth 15, and a ri id tooth and is provided on one end 0 its axis armlike projection 17, to which is d by means of a threaded pin 18 the draw bars 19 and 20 one of which, bar 20, is connected to a bell crank lever 21 which is mounted below the keyboard, (not shown) and is adaptedto be actuated by means of the key 22. The draw bar 20 isconnected to the threaded pin 18 by means of a longitudinal slot 23.

Upon a shaft 36 is pivotally mounted a two-armed lever 25 which is provided with a lug or pin 24 said" lever 25 receiving a means of a crank arm 34 Which is rigidly .connccted thereto, said crank-arm having a pin 35 which engages a forked lever which is actuated set or lug 19, and is held under the tension of a spring 31 against the pin 30 carried b an arm 29, said arm being adapted to be set by means of a hand grip 28. is suitably mounted to rotate in the housin between the pins26 and 27 which determine the two set positions of the arm.

he operation of the mechanism of the present invention is as follows: If an actuating movement is given to the hand lever ofi'l'fe machine, or if the machine is driven by amotor, the lever 25 receives an oscillatory movement in the direction of the arrow, and strikes with its pin QA-sagainSt theofiset or look 19 of the draw bar 19 and draws the latter into the dotted line position :1). Through this movement, the shift look, by means of its armlike projections 17 receives a swinging movement in the direction of the arrow, tooth 15 is moved out of the path of the lock Said arm 29 whereby the loose shiftoffset 19.

2 AVAILAB COPY 1,1 44,192

11, and the rigid shift tooth 16 is moved into contact with said lock 11. When the loose shift tooth 15 is'removed from the lock 11, it is actuated by a spring (not shown) to move into position behind the lock 11 so that after the reverse movement of the shift look, when the rigid shift tooth 16 has been released again from contact with the lock 11, the carriage, is influenced by the carriage actuating spring and travels until the lock 11 of the next column strikes against the shift tooth 15. \Vhen it is desired to remove the paper carriage from the automatic influence of the movement of the hand lever'or the machine driving mechanism, then, by 'means A of the knob or hand grip 28, the arm 29 is V turned into the dotted line position, whereby the draw-bar 19 which is provided with the lock 19 is lowered into the dotted line position y,-into which position the pin 24 can not enter into operative contact with the If it is desired to shift the paper carriage from one column to another, when the machine is in this position, then the key 22 is depressed, when,,through the medium of the bell crank lever 21 the draw bar 20 is actuated and the'shift lock operated exactly .as hereinbefore described for the automatic action.

i What I claim is 1. A paper carriage shifting mechanism for computing machines, comprising in comhination'with a driving means and a paper carriage, a shift mechanism for said paper carriage, means connecting said driving mechanism and said shifaniechanism, means for cutting out said connecting means, and a key for operating said shift mechanism When said connecting means is cut out.

2. A paper carriage shifting mechanism for computing machines, comprising in combination with a driving mechanism and a paper carriage, a shift mechanism associated with saidpaper carriage, draw bars connected to said shift mechanism, means for automatically connecting one of said draw bars and said driving mechanism, means for preventing said automatic connection of said draw bar and the driving mechanism, and a key associated with the other draw bar for actuating said shift mechanism when the first mentioned draw bar is inoperative.

3. A paper carriage shift mechanism for computing machines, comprising in combination, with a driving mechanism and a paper carriage, a shift mechanism, draw bars connected to said shift mechanism, means actuated by said driving mechanism for antomatic locking one of said draw bars to the driving mechanism for automatic actuation of said shifting mechanism, said draw bar being normally positioned for said automatic connection, means for removing said draw bar out of its normal position into ining mechanism for automatic actuation of said shifting mechanism, said draw bar being normally positioned for said automatic connection, a lever bearing on said draw bar,

a hand grip for actuating said lever to turn said draw bar into inoperative position, and a key connected to the other of said draw bars for manualactuation of said shift mechanism, v

In testimony whereof I afiix my signature in presence of two witnesses.

JOHN EMIL WILLIAM GREVE. Witnesses W'ALTHER H. Mi'icnn, M. ROTHE. 

